win/C#/frmDownload.cs

   1 using System;\r
   2 using System.Collections.Generic;\r
   3 using System.ComponentModel;\r
   4 using System.Data;\r
   5 using System.Drawing;\r
   6 using System.Text;\r
   7 using System.Windows.Forms;\r
   8 using System.Net;\r
   9 using System.IO;\r
  10 using System.Threading;\r
  11 using System.Diagnostics;\r
  12 \r
  13 namespace Handbrake\r
  14 {\r
  15     public partial class frmDownload : Form\r
  16     {\r
  17         private Thread downloadThread;\r
  18         private Stream responceStream;\r
  19         private Stream loacalStream;\r
  20         private HttpWebRequest webRequest;\r
  21         private HttpWebResponse webResponse;\r
  22         private static int progress;\r
  23         private delegate void UpdateProgessCallback(Int64 BytesRead, Int64 TotalBytes);\r
  24         private delegate void DownloadCompleteCallback();\r
  25         private delegate void DownloadFailedCallback();\r
  26 \r
  27 \r
  28         public frmDownload()\r
  29         {\r
  30             InitializeComponent();\r
  31 \r
  32             try\r
  33             {\r
  34                 downloadThread = new Thread(Download);\r
  35                 downloadThread.Start();\r
  36             }\r
  37             catch (Exception exc)\r
  38             {\r
  39                 MessageBox.Show("An error occured on the Download Thread \n" + exc.ToString(),"Error",MessageBoxButtons.OK, MessageBoxIcon.Error);\r
  40             }\r
  41           \r
  42         }\r
  43 \r
  44         private void Download()\r
  45         {\r
  46             Functions.RssReader rssRead = new Functions.RssReader();\r
  47 \r
  48             string appPath = Application.StartupPath.ToString() + "\\";\r
  49             string hbUpdate = rssRead.downloadFile(); \r
  50             string downloadPath = appPath + "Handbrake-win.exe";\r
  51             WebClient wcDownload = new WebClient();\r
  52                 try\r
  53                 {\r
  54                     webRequest = (HttpWebRequest)WebRequest.Create(hbUpdate);\r
  55                     webRequest.Credentials = CredentialCache.DefaultCredentials;\r
  56                     webResponse = (HttpWebResponse)webRequest.GetResponse();\r
  57                     Int64 fileSize = webResponse.ContentLength;\r
  58 \r
  59                     responceStream = wcDownload.OpenRead(hbUpdate);\r
  60                     loacalStream = new FileStream(downloadPath, FileMode.Create, FileAccess.Write, FileShare.None);\r
  61 \r
  62                     int bytesSize = 0;\r
  63                     byte[] downBuffer = new byte[2048];\r
  64 \r
  65                     long flength = 0;\r
  66                     while ((bytesSize = responceStream.Read(downBuffer, 0, downBuffer.Length)) > 0)\r
  67                     {\r
  68                         loacalStream.Write(downBuffer, 0, bytesSize);\r
  69                         flength = loacalStream.Length;\r
  70                         this.Invoke(new UpdateProgessCallback(this.UpdateProgress), new object[] { loacalStream.Length, fileSize });\r
  71                     }\r
  72 \r
  73                     responceStream.Close();\r
  74                     loacalStream.Close();\r
  75 \r
  76                     if (flength != fileSize)\r
  77                         this.Invoke(new DownloadFailedCallback(this.downloadFailed));\r
  78                     else\r
  79                         this.Invoke(new DownloadCompleteCallback(this.downloadComplete));\r
  80                 }\r
  81                 catch (Exception)\r
  82                 {\r
  83                     // Do Nothing \r
  84                 }\r
  85         }\r
  86 \r
  87         private void UpdateProgress(Int64 BytesRead, Int64 TotalBytes)\r
  88         {\r
  89             try\r
  90             {\r
  91                 long p = (BytesRead * 100) / TotalBytes;\r
  92                 progress = int.Parse(p.ToString());\r
  93                 progress_download.Value = progress;\r
  94                 lblProgress.Text = (BytesRead / 1024) + "k of " + (TotalBytes / 1024) + "k ";\r
  95             }\r
  96             catch (Exception exc)\r
  97             {\r
  98                 MessageBox.Show("Integer Convertion Error On Download \n" + exc.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);\r
  99             }\r
 100         }\r
 101 \r
 102         private void downloadComplete()\r
 103         {\r
 104             lblProgress.Text = "Download Complete";\r
 105             btn_cancel.Text = "Close";\r
 106 \r
 107             string appPath = Application.StartupPath.ToString() + "\\";\r
 108             \r
 109             Process hbproc = Process.Start(appPath + "Handbrake-win.exe");\r
 110             hbproc.WaitForExit();\r
 111             hbproc.Dispose();\r
 112             hbproc.Close();\r
 113 \r
 114             this.Close();\r
 115         }\r
 116 \r
 117         private void downloadFailed()\r
 118         {\r
 119             lblProgress.Text = "Download Failed";\r
 120             btn_cancel.Text = "Close";\r
 121         }\r
 122 \r
 123         private void btn_cancel_Click(object sender, EventArgs e)\r
 124         {\r
 125             webResponse.Close();\r
 126             responceStream.Close();\r
 127             loacalStream.Close();\r
 128             downloadThread.Abort();\r
 129             progress_download.Value = 0;\r
 130             lblProgress.Text = "Download Stopped";\r
 131             this.Close();\r
 132         }\r
 133     }\r
 134 }